package com.sky.service.impl;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishService dishService;

    @Override
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);//从第一个参数拷贝到第二个参数
        //1.像菜品表插入一条数据
        dishMapper.insert(dish);
        Long dishId = dish.getId();

        //2.向菜品口味表插入n条数据
        List<DishFlavor> flavors = dishDTO.getFlavors();

        if (flavors != null && flavors.size() > 0) {
            flavors.forEach(dishFlavor -> dishFlavor.setDishId(dishId));
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    @Override
    public List<DishVO> pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        List<DishVO> dishPageQueryDTOS = dishMapper.pageQuery(dishPageQueryDTO);
        return dishPageQueryDTOS;
    }

    /**
     * 批量删除
     *
     * @param ids
     */
    @Override
    public void deleteBatch(List<Long> ids) {
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus() == 1) {
                throw new RuntimeException("起售中的菜品不能删除");
            }
        }
        List<Long> setmealIds = setmealDishMapper.getSetmealIdByDishId(ids);
        if (setmealIds != null && setmealIds.size() != 0) {
            throw new DeletionNotAllowedException("当前菜品有在套餐中，不能删除");
        }
        for (Long id : ids) {
            dishMapper.deleteBatch(id);
        }
        for (Long id : ids) {
            dishFlavorMapper.deleteByDishId(id);
        }


    }

    @Override
    public DishDTO selectById(Long id) {
        DishDTO dishDTO = dishMapper.selectById(id);
        dishDTO.setFlavors(dishMapper.selectFlavorsById(id));
        return dishDTO;
    }

    @Override
    public void update(DishDTO dishDTO) {
        dishMapper.update(dishDTO);
        Long id = dishDTO.getId();
        dishMapper.delDishFlavor(id);
        //2.向菜品口味表插入n条数据
        List<DishFlavor> flavors = dishDTO.getFlavors();

        if (flavors != null && flavors.size() > 0) {
            flavors.forEach(dishFlavor -> dishFlavor.setDishId(id));
            dishFlavorMapper.insertBatch(flavors);


        }


    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}